Precision CNC Turning
Services in China
2-axis, live tool & Swiss-type turning to ±0.005mm. ISO 9001:2015 & AS9100D certified. 70+ materials. Prototypes in 3–7 days. Trusted by aerospace, medical & automotive OEMs worldwide since 2010.
China's Leading CNC Turning Company for Global OEMs
Founded in 2010, MW+ Precision Manufacturing Co., Ltd. is a specialist CNC turning company in Shenzhen, China. Our 12,000 m² facility operates advanced CNC lathes, live tool turning centres, and Swiss-type automatics capable of turning diameters from Ø1 mm to Ø800 mm and lengths to 1,000 mm — all under real-time Statistical Process Control.
With over 14 years of turning expertise, our team of 60+ machinists and quality engineers delivers consistent dimensional accuracy from first prototype through 100,000-unit production runs. Each project is assigned a dedicated account engineer — giving global procurement teams direct access to technical guidance, not just a production floor.
Partnering with MW+ delivers 20–40% cost advantages versus equivalent Western turning suppliers, while maintaining full certification compliance — ISO 9001:2015, AS9100D, IATF 16949, ISO 13485 compatibility, and ITAR registration — that demanding OEM supply chains require.
"In CNC turning, micron-level decisions compound across thousands of parts. After 14 years and over 2 million turned components shipped, our edge is not just machine capability — it's the institutional process knowledge that prevents defects before they occur."
— Production Engineering Director, MW+ Precision · 16 years CNC turning experienceFrom CAD File to Certified Turned Part — 7 Steps
A transparent, engineering-led workflow built for professional procurement teams. Average total cycle: 3–25 working days depending on complexity, material, and volume.
2-Axis, Live Tool & Swiss-Type CNC Turning
Three distinct turning technologies — each optimised for different part geometries, diameter ranges, and tolerance requirements. Our engineering team recommends the right process for your application.
2-Axis CNC Turning
The cost-effective workhorse for shafts, pins, bushings, and cylindrical components. X and Z axis movement produces consistent external and internal diameters, tapers, grooves, and threads at high throughput — ideal for medium to high-volume production.
- Spindle speed up to 4,500 RPM
- Roughing and finishing in one chucking
- All thread forms: Metric, UNC, UNF, BSP, NPT
- Bar-fed automation for 24/7 production
Live Tool CNC Turning
Combines turning and milling in a single setup using powered turret tools. Y-axis capability enables off-centre milling, cross-drilling, and flat features on cylindrical parts — eliminating secondary operations, reducing setups by up to 50%, and improving inter-feature positional accuracy.
- Y-axis for off-centre milling and keyways
- Simultaneous milling and turning operations
- Cross-drilling, tapping, and slotting in one setup
- Reduces handling errors and re-referencing
Swiss-Type CNC Turning
Purpose-built for small-diameter precision parts (Ø1–32 mm). A guide bushing positioned immediately adjacent to the cutting zone provides ultra-rigid support, enabling ±0.005mm tolerances on long slender components that would deflect on a standard lathe. Essential for medical screws, dental implants, watch components, and electronic pins.
- Guide bushing for near-zero deflection
- Live tooling with backworking capability
- Concentricity to 0.002 mm achievable
- Full biocompatibility documentation for medical
CNC Turning Specifications & Tolerance Standards
Comprehensive technical data for procurement engineers and quality managers evaluating CNC turning supplier capability.
Turning Type Comparison
| Parameter | 2-Axis | Live Tool | Swiss-Type |
|---|---|---|---|
| Positional Tolerance | ±0.01 mm | ±0.008 mm | ±0.005 mm |
| Diameter Tolerance | ±0.005–0.01 | ±0.005 | ±0.0025 mm |
| Concentricity | 0.005 mm | 0.003 mm | 0.002 mm |
| Surface Finish Ra | 1.6 µm | 0.8 µm | 0.4 µm |
| Diameter Range | Ø5–500 mm | Ø10–300 mm | Ø1–32 mm |
| Max Length | 1,000 mm | 800 mm | 400 mm |
| Spindle Speed | 4,500 RPM | 6,000 RPM | 12,000 RPM |
| Off-Axis Features | No | Yes — Y-axis | Yes — Live tools |
| Best For | Shafts, pins, bushings | Complex housings | Medical, electronic pins |
Turning GD&T Callouts We Machine To
CNC Turning Tolerance Reference
| Feature Type | Standard | High Precision | Swiss-Type |
|---|---|---|---|
| Linear Dimensions | ±0.01 mm | ±0.005 mm | ±0.003 mm |
| Shaft / Bore Diameter | ±0.005–0.01 | ±0.0025 mm | ±0.0025 mm |
| Concentricity | 0.005–0.01 | 0.002 mm | 0.002 mm |
| Roundness (Circularity) | 0.005 mm | 0.002 mm | 0.001 mm |
| Length Control | ±0.01–0.02 | ±0.005 mm | ±0.003 mm |
| Thread Accuracy | ISO 6g / 6H | ISO 5g / 5H | ISO 4g / 4H |
| Surface Finish Ra | 1.6–3.2 µm | 0.4–0.8 µm | ≤0.4 µm |
| Critical diameter tolerances to ±0.0025mm achievable on Swiss-type and dedicated 2-axis high-precision lathes with in-process gauging. Custom tolerance agreements available. | |||
Thread Standards Supported
Metrology Equipment
Complete CNC Turning Service Types
Every turning service MW+ offers — from first-off prototypes to lights-out mass production, from micro Swiss pins to Ø800mm heavy shafts. Identical quality standards across all service tiers.
Rapid Prototype Turning
Fast-turn first-off prototypes in production-grade materials. Free DFM review, material alternatives advisory, and instant quotation on standard cylindrical geometries.
Low-Volume Production
Bridge production for clinical trials, market testing, or seasonal demand. Fixture and tooling costs amortised across the run. Suitable for PPAP submission samples.
High-Volume Production Turning
Automated bar-fed lathes, robotic part unloading, and SPC-monitored production cells. JIT delivery scheduling, kanban replenishment, and blanket order arrangements available.
Lights-Out CNC Turning
Fully automated turning cells running overnight and weekends. Integrated vision systems perform 100% OD measurement in-cycle. Cost-per-part minimised at scale without sacrificing quality.
Precision Shaft Turning
High-straightness shafts for gearboxes, motors, pumps, and spindles. Cylindricity, runout, and straightness reported per GD&T. Ground OD finishes to Ra 0.4 µm available.
Swiss-Type Micro Turning
Guide-bushing supported turning for slender small-diameter parts. Eliminates deflection errors on long L/D ratios. Ideal for medical bone screws, watch stems, electronic pins, and dental implants.
Mill-Turn / Turn-Mill
Live tool turning centres machine flats, keyways, cross-holes, eccentric features, and slots on cylindrical parts in a single clamping — eliminating datum shift and reducing cycle time by up to 50%.
Contour & Taper Turning
CNC interpolation produces complex external profiles — convex radii, concave forms, compound tapers, and spline shapes — in a single pass without form tools. Used for turbine nozzles, valve stems, and custom fittings.
Thread Turning & Rolling
Single-point thread turning for all standards and custom pitches. Thread rolling for work-hardened, fatigue-resistant threads on high-stress aerospace and automotive fasteners. Go/No-Go gauge verification standard.
Bushings, Sleeves & Liners
Wear-resistant plain bearings, slide bushings, and hydraulic cylinder liners. H7/p6 press-fit, H8/e8 clearance, and custom fits. ID honing available for Ra ≤ 0.4 µm bore finish.
Turned Rings & Flanges
Large-diameter rings, retaining flanges, bearing races, and spacer discs turned on heavy-duty lathes. Face flatness and bore concentricity controlled simultaneously to minimise perpendicularity error.
Connector Pins & Contacts
High-precision electrical contact pins, terminal posts, and spring-loaded pogo pins turned from beryllium copper, brass C360, or phosphor bronze. RoHS-compliant plating with controlled contact resistance.
CNC Turning + Grinding
Rough and semi-finish turning followed by cylindrical OD or ID grinding achieves bearing-quality surfaces. Used for hardened steel spindles, gauge pins, and precision rollers where turning Ra alone is insufficient.
Hard Turning
CBN (Cubic Boron Nitride) insert turning of hardened steels up to 68 HRC. Achieves Ra 0.4 µm surface finish, often eliminating the grinding operation entirely. Used for gear shafts, bearing housings, and valve seats after heat treatment.
Sub-Spindle & Backworking
Dual-spindle turning centres machine the front and back of a part in a single continuous cycle — no manual re-chucking, no datum loss. Particularly effective for Swiss-type and bar-fed parts requiring machined ends on both sides.
Custom & Exotic Alloy Turning
Inconel, Waspaloy, Hastelloy, tungsten, Kovar, Invar 36, beryllium copper, and PEEK. Optimised tooling, cutting parameters, and coolant strategies prevent work-hardening and ensure dimensional stability in the most difficult-to-machine materials.
70+ Engineered Materials — Full Mill Certificate Traceability
From free-machining stainless steel to high-temperature superalloys and medical-grade polymers. Every material batch supplied with mill certificates and RoHS declarations.
Aluminium Alloys
Lightweight, excellent machinability, and corrosion resistance. Primary material for aerospace structures, EV housings, heat sinks, and consumer electronics. Anodising compatible.
Stainless Steel
Corrosion resistance and high strength for medical, marine, food processing, and structural applications. 17-4PH for high-strength aerospace turned components.
Carbon & Alloy Steels
Structural shafts, gears, and transmission components. Heat treatable and case hardenable to 60+ HRC for wear applications. Through-hardening available.
Copper, Brass & Bronze
Excellent electrical conductivity and anti-galling properties. Ideal for connectors, bushings, valve seats, and bearing components. C360 brass for free-machining speed.
Titanium & Superalloys
Aerospace, medical implants, and high-temperature applications. Full biocompatibility documentation for titanium implants. Inconel and Hastelloy for corrosive environments.
Engineering Plastics
Lightweight, chemically resistant, low friction. PEEK for implantable devices; PTFE for chemical equipment; Delrin/POM for precision gears and bushings with tight tolerances.
Premium Surface Finishing for Turned Parts
In-house and qualified-partner finishing services — all specified, measured, and reported under MW+ quality oversight to ensure consistent results batch to batch.
As-Turned
Standard turned finish, cost-effective for internal or functional components. Consistent surface quality across the full batch.
Ra 1.6–3.2 µm · No additional lead timeBead Blasting
Uniform matte texture eliminates tool marks and micro-burrs. Excellent pre-treatment before anodising or powder coating.
Ra 1.0–2.0 µm · Al, SS, Ti compatibleAnodising (Type II / III)
Type II decorative in custom colours. Type III hard-anodise up to 50 µm depth increases surface hardness significantly for wear-critical turned parts.
MIL-A-8625 · Up to 70 HRC surfacePowder Coating
Durable thermoplastic finish in RAL/NCS colours. Excellent UV resistance and impact durability for outdoor or consumer-facing turned components.
50–150 µm · ASTM D3359 adhesionPlating (Zn/Ni/Cr/Ag/Au)
Zinc for corrosion, nickel for hardness, chrome for aesthetics, silver and gold for electrical conductivity on precision connector pins and contacts.
2–25 µm · RoHS-compliant optionsPolishing / Electropolishing
Hand or machine polished to mirror finish for medical instruments. Electropolishing micro-deburrs and smooths bore surfaces for biotech and pharmaceutical equipment.
Ra ≤0.4 µm · ASTM B912Passivation
Chemical passivation removes free iron from stainless steel surfaces, maximising corrosion resistance for marine, medical, and food-grade applications.
ASTM A967 · ASTM A380Laser Marking & Black Oxide
Permanent logos, serial codes, 2D Data Matrix and UDI marks on any turned surface. Black oxide for corrosion resistance and reduced light reflection on steel parts.
UDI compliant · Full traceabilityZero-Compromise Quality Control for Turned Parts
Every turned part traceable. Every diameter verified. Full AS9102 FAI, PPAP Level 3, and material mill certificate packages available for aerospace, medical, and automotive clients.
Certifications & Standards
Core CNC Turning & Machining parts solutions
Specialist product lines — each optimised for specific engineering requirements, certification frameworks, and supply chain needs.
CNC Precision Parts
High-precision turned and milled components to ±0.005mm serving aerospace, medical, automotive, and electronics industries. Full QMS compliance with material traceability on every order.
- ISO 9001:2015 & AS9100D certified QMS
- 2-axis, live tool, Swiss, & 5-axis machining
- Global shipping: USA, Europe, Asia, Australia
- 70+ materials with full mill cert traceability
- CMM reports, FAI & CoC on request
Machine Parts
Industrial-grade CNC turned and machined components for heavy machinery, gearboxes, hydraulic systems, and high-volume production. SPC monitoring, PPAP, and kanban scheduling available.
- Shafts, gears, housings, valves & manifolds
- 500–100,000+ unit production capability
- Heat treatment & surface hardening in-house
- Full QA reports & material mill certificates
- SPC monitoring & Cp/Cpk capability reporting
CNC machine pins
engineers ultra-precision connector pins, machined pins, turned pins, electrical contact pins, and terminal pins from our state-of-the-art facility in Shenzhen, China. We supply OEM/ODM clients across electronics, automotive, aerospace, and industrial sectors
- 2–5 day express service available
- No minimum order quantity — from 1 piece
- Free DFM analysis with every enquiry
- 70+ metals and engineering plastics
- Production-intent materials and tolerances
CNC Turning for Mission-Critical Applications Worldwide
MW+ serves demanding sectors where dimensional accuracy in turned components, material traceability, and supply chain reliability are non-negotiable.
Aerospace & Defence
Shafts, fittings, hydraulic piston rods, engine components, and landing gear parts. Inconel, titanium, and 17-4PH routinely turned to AS9100D standards.
Automotive & EV
Transmission shafts, motor spindles, EV connector pins, driveshaft components, and high-volume steel and aluminium turned parts with PPAP documentation.
Medical & Dental
Orthopaedic bone screws, dental implants, surgical instrument handles, cannula tubing, and PEEK/titanium micro-components via Swiss-type turning.
Robotics & Automation
Precision joint shafts, harmonic drive wave generators, actuator spindles, and encoder hubs with tight concentricity and low runout for smooth motion.
Electronics & Connectors
Contact pins, terminal pins, connector housings, heat-sink standoffs, and test probe tips. Gold and silver plating for reliable low-resistance electrical contacts.
Oil & Gas
Valve bodies, subsea fittings, downhole drilling components, and exploration hardware in corrosion-resistant Inconel, Hastelloy, and Duplex stainless steel.
Industrial Machinery
Hydraulic cylinder rods, gearbox shafts, pump impellers, compressor pistons, and heavy equipment spindles in cast iron, hardened steel, and stainless steel.
Energy & Renewables
Wind turbine main shafts, solar tracker pivot components, power generation coupling hubs, and large-diameter turning up to Ø800mm for heavy industrial parts.
Trusted by Global Engineering Teams
Verified feedback from procurement managers, mechanical engineers, and R&D directors on MW+ Precision CNC turning programmes.
"MW+ delivered 10,000+ precision shafts with ±0.005mm diameter tolerance — every piece cleared CMM inspection on first article. Parts arrived 3 days ahead of schedule. Their DFM feedback on our shaft design saved us 15% in material costs before we cut a single part."
"We required Swiss-type turning for complex titanium implant components at ±0.005mm. MW+ held tolerance across the full batch and provided ISO 13485-compatible documentation with complete material traceability. Communication and engineering support were outstanding throughout the programme."
"As a Tier 1 automotive supplier we rely on MW+ for high-volume transmission shaft turning. Their SPC reports and Cp/Cpk data give our quality team the process confidence needed for IATF 16949 compliance. Lead times are 30% better than our previous China source and quality is consistently excellent."
Standard 2-axis CNC turning achieves ±0.01mm. Live tool turning holds ±0.008mm. Swiss-type turning routinely achieves ±0.005mm and can reach ±0.0025mm on critical bearing diameters. Concentricity is held to 0.002mm on dedicated setups. All tolerances verified with Zeiss Contura G2 CMM and documented in FAI or PDF dimensional reports.
Standard CNC turning handles up to Ø500mm diameter and 1,000mm length. Swiss-type CNC turning covers Ø1–32mm precision parts. Heavy-duty lathes handle diameters up to Ø800mm for large industrial components such as wind turbine shafts and pump impellers.
2-axis CNC turning moves the tool in X and Z to produce cylindrical shapes — best for shafts, pins, and bushings at high volume. Live tool turning adds powered milling, drilling, and tapping tools on the lathe turret plus C-axis and optional Y-axis, enabling off-axis features in a single setup. Swiss-type turning uses a guide bushing adjacent to the cutting zone for ultra-rigid support, enabling ±0.005mm on small-diameter parts (Ø1–32mm) such as medical screws, pins, and electronic contacts.
Over 70 materials: Aluminium (6061-T6, 7075-T6, 2024, 6082, 5083), Stainless Steel (303, 304, 316L, 17-4PH, 420, 440C), Carbon and Alloy Steel (1018, 1045, 4140, 4340, 8620), Copper and Brass (C110, C360, C932 Bronze, Beryllium Copper), Titanium (Ti-6Al-4V Grade 5), Superalloys (Inconel 718, Hastelloy C276, Monel K500), and Engineering Plastics (PEEK, PTFE, Delrin/POM, Nylon 6/66, Ultem PEI). All materials supplied with mill certificates and RoHS declarations.
There is no minimum order quantity at MW+ Precision. Orders are accepted from a single prototype piece through to 100,000+ unit production runs. Set-up costs are quoted transparently and can be amortised over subsequent repeat orders.
Standard CNC turning prototype lead time is 3–7 working days from purchase order confirmation. Expedited 24–48 hour service is available for urgent R&D projects, subject to material availability and machine scheduling. Production lead times range from 10–25 days depending on complexity, material, and volume.
MW+ provides: First Article Inspection (FAI) reports per AS9102, CMM dimensional reports with full measurement data, material mill certificates with heat number traceability, Certificate of Conformance (CoC), thread gauge records, RoHS and REACH declarations, surface roughness reports (Ra/Rz), and PPAP Level 1–5 documentation for automotive clients.
Available finishes include: as-turned, bead blasting, anodising (Type II/III hardcoat MIL-A-8625), powder coating (RAL colours, 50–150µm), electroplating (zinc, nickel, chrome, silver, gold), mirror polishing and electropolishing (Ra ≤0.4µm, ASTM B912), passivation (ASTM A967), black oxide, and laser marking (UDI compliant). Custom finishes available on request.
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